*{padding: 0;margin: 0;box-sizing: border-box;}

body{
    background: #f7f8f9;
    padding-bottom: 50px;
}
a{
    text-decoration: none;
}

.base{
    width: 70%;
    margin: 0 auto;
}
.marg-bot-l{
    margin-bottom: 20px!important;
}
.marg-bot-ll{
    margin-bottom: 40px!important;
}
.marg-bot-lll{
    margin-bottom: 60px!important;
}

h1{
    text-align: center;
    color: #5755d9;
    font-size: 46px;
    margin-top: 5%;
    margin-bottom: 20px;
}
h2{
    background: #f2f2f2;
    border-left: 10px solid #5755d9;
    padding: 10px 0 10px 10px;
}

.copy-box{
    margin: 40px auto 20px;
}

.copy-box p{
    background: #fff;
    margin-bottom: 15px;
    padding: 20px 25px;
    border: 1px solid #ddd;
    color: #4d4d4d;
}
.copy-box em{
    color: #ccc;
    padding-left: 20px;
}
.copy-box em:before{
    content: "//";
    padding-right: 5px;
}

.links-box{
    padding-top: 20px;
    text-align: center;
    font-size: 18px;
}
.links-box a{
    display: inline-block;
    background: #2196f3;
    color: #fff;
    padding: 10px 25px;
    border-radius: 10px;
}
.links-box a + a{
    margin-left: 10px;
}


.tips{
    padding: 20px 0;
    line-height: 30px;
    counter-reset: 'cc' 1;
}
.tips p{
     counter-increment: cc;
     margin-bottom: 10px;
}
.tips p:before{
    content: counter(cc);
    display: inline-block;
    margin-right: 10px;
    padding: 0 10px;
    background: #e4e2e2;
}

.links-a{
    background: #f6f6d6;
    padding: 10px;
}
.links-a a{
    display: inline-block;
    margin-right: 20px;
    line-height: 28px;
}

.pre-code{
    margin: 10px 0;
    background: #f1f1f1;
    padding: 0;
    line-height: 20px;
}

.fixed-menu{
    position: fixed;
    right: 0;
    top: 20%;
    width: 100px;
    background: #3a3996;
}
.fixed-menu a{
    display: block;
    line-height: 40px;
    height: 40px;
    color: #fff;
    font-size: 12px;
    padding: 0 10px;
    text-overflow:ellipsis;
    white-space: nowrap;
    overflow: hidden;
}
.fixed-menu p{
    color: #fff;
    text-align: center;
    font-size: 12px;
    line-height: 40px;
    color: #ffeb3b;
    font-weight: 700;
    border-bottom: 1px dashed #292967;
}
.fixed-menu a:hover{
    background: #292967;
}


#go-top{
    width: 50px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    background: #ccc;
    font-size: 24px;
}
#go-top:active{
    color: #4d4d4d;
}

.list-group{
    padding: 20px 0;
}
.list-group li{
    display: block;
    list-style: none;
}
.list-group li a:before{
    content: "▶";
    display: inline-block;
    padding-right: 10px; 
}
.list-group a{
    display: block;
}
.list-group em{
    color: #666;
    padding-left: 20px;
}







